you get a great deal on a new subaru. we'll donate 250 dollars to a choice of charities that benefit your community. it feels good to be a helping hand. shooting at newtown sandy hook elementary school are now public. cnn has listened to them and here is what we have learned. the dispatchers were incredibly calm. a hero custodian gave the operators crucial information to help police. we heard one teacher trapped in a classroom with the students being told to lock to door. the release of these tapes, though, has been a huge debate. many newtown families have strongly opposed the release of these 911 calls. let me bring in two voices here. brian stelter in washington, and senior legal analyst jeff toobin here with me in new york. a number of folks have heard these tapes now. they're out. in your opinion, what is the news value of these 911 calls? >> when there is a mass shooting like the one that happened last year and you can hear how the first responders were informed about the shooting, and you can hear what was happenin